Improvement in grain thrasher and separator



A. J- HOAG. GrainThrasher and Separator. N6. 207,418.

Patented Aug. 27, 1878.

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N. PETERS, PHOTWUTHOGRiPNER. WASHINGTON D. C.

- longitudinal section through the same.

UNITED STAT s PATENT OFFICE.

ANDREW J. HOAG, OF BATTLE CREEK, MICHIGAN.

IMPROVEMENT IN GRAIN Tl-IRASHER AND SEPARATOR.

Specification forming part of Letters Patent No. 207,418, dated August27, 1878; application filed June 22, 1878.

To all whom it may concern:

Be it known that 1, ANDREW J. HOAG, of Battle Creek, county of Calhoun,State of Michigan, have invented certain new and useful Improvements inGrain Thrasher and Separator, of which the following is a full, clear,and exact description, reference being had to the accompanying drawings,making part of this specification, in which- Figure 1 is a sideelevation of a portion of a thrashing-machine and grain-separator withmy improvements applied. Fig. 2 is a vertical Fig. 3 is a side elevationof the hinged hood or cover to the thrashing-cylinder, and Fig. 4 atransverse section through a portion of the same.

Similar letters of reference denote correspondin g parts wherever used.

My invention consists, first, in hinging the hood or cover to thethrashing-cylinder and making it adjustable for giving access to thecylinder, and also for adjusting or regulating the throat or spacebetween it and the cylinder and concave, according as the nature of thegrain operated upon may require; and, secondly, in a novel means forvibrating the riddle or sieve, and facilitating the cleaning andseparation of the grain from the chaff and foul stuff, as hereinafterexplained.

The machine, in its organization and general arrangement of parts, maybe similar to machines now in use, and need not therefore be describedin detail further than is necessary to an understanding of myimprovements.

In the accompanying drawings, AA represent an upright frame-work ofsuitable construction for the purpose for which it is intended, and B isthe thrashing-cylinder, the shaft of which is mounted in bearings nearone end of the longitudinal frame-bars A Uprights A are secured to theside frame-timbers, A just back of the cylinder, said uprights beingconnected bya transverse bar, A said parts, in connection with the sidebars, A forming a support for the hood or cover 0 to the cylinder B.This hood or cover may be made in any usual or preferred form, forclosing upon or covering the top and ends, and partly the front, of thecylinder, leaving the usual throat in front for feeding the grainthereto, but, instead of being rigidly fastened to the frame, in theusual manner, is hinged, by 1ts rear upper corner, to the uprights A ortransverse bar A in such manner that it can 'be raised in front, turningupon hinges a, for

giving access to the cylinder orincreased space between it and thecylinder and thrashingconcave, as may be required.

b b are uprights secured to the frame-bars A at the sides of the hingedcover 0, and provided with slots b formed in the arc of a circlecentering in the hinge or pivot to the cover 0. Pius d cl are attachedto the side pieces, 0, 'of the cover; or, if preferred, a through-rodmay be employed, passing transversely through the cover, the projectingends passing through the slots in the standards I). One of these pins,or one end of the rod, may be provided with a head and the other with athumb-nut, or both may be provided with nuts or equivalent device forholding the cover at any desired point of adjustment. The slots 1) areopen at their upper ends, permitting the pins to pass out when it isdesired to fold the cover out of the way for giving access to thecylinder.

D represents the shoe, made in any usual or preferred form, andsuspended at its rear or discharging end upon pendent links 0 0 whichpermit its vibration, its forward end being either similarly supportedor connected by a longitudinal strap, 0 with the forward transverseframe-bar, as shown. E is a riddle or screen arranged within the shoe orseparator frame, underneath the straw carrier or separator, (not shown,)which may be of any usual or preferred construction, the riddlereceiving the grain therefrom. The rear or discharging end of thisriddle is supported upon uprights or pivotal blocks f, or an equivalentdevice, permitting the vertical vibration of the riddle, and the forwardend is supported upon a transverse shaft, g, provided with angular camsg, which, as the shaft is rotated or rocked back and forth, impart arapid rising and fallin g movement or vertical vibration to said end,for shaking or giving a tossing movement to {the grain and chaffthereon, and facilitating the cleaning and winnowing of the grain. Camsof any suitable form may be employed, and they may be made-removablefrom the shaft, adapting them to be substituted by other cams ofdifferent form, for giving either a greater or a more rapid vibration tothe screen, as the character or condition of the crop may require. Ifpreferred, the shaftmay be driven by pulleys of diflerent sizes, thusgiving it greater or less speed and varying the motion of the screen.

Motion is imparted to the shaft from any convenient driving-shaft, andany suitable arrangement of gearing, pulleys. and belt, or crank-armsand connecting-rod, may be employed for the purpose.

Endwise movement of the screen is prevented by uprights f engaging withnotches in the side bars of the separator-frame, or by other suitabledevice for that purpose.

Parts of the machine not particularly described may be constructed inany usual or preferred way.

Having now described my invention, what I claim as new, and desire tosecure by'Letters Patent, is-

1. The combination, with the thrashing-cylinder, of the adjustable hoodor cover for giving access to the cylinder, and permitting itsadjustment for regulating the feed-opening and the space between thecylinder and cover, substantially as described.

2. The hinged cover 0, in combination with the standards b b, having theopen slots, and

means for holding the cover at any desired adjustment, whereby the covercan be folded over for giving access to the cylinder, or set at anydesired adjustment, without removing the fastening devices,substantially as described.

3. In a grain thrasher and separator, the vertically-vibrating riddle orscreen, supported at its forward or receiving end on a shaft, g, incombination with the angular cams g on said shaft, for imparting thevertical vibration to the screen, substantially as described.

ANDREW J. HOAG.

Witnesses GEO. W. HYATT, F. T. ROBERTS.

